AgI@TiO_(2)@UiO-66复合材料的制备及光降解诺氟沙星的研究

Preparation of AgI@TiO_(2)@UiO-66 Composite and Study on Photodegradation of Norfloxacin

通过一种简易的水热法合成了一种基于MOF的纳米复合材料AgI@TiO_(2)@UiO-66,该纳米复合材料是具有高活性的MOF基光催化剂,测定了其在可见光照射下对有机染料诺氟沙星表现出优异的光降解性能。纳米复合材料采用X射线衍射(XRD)、傅里叶变换红外(FTIR)、紫外漫反射光谱图(UV-Vis DRS)进行了表征。在30 min暗反应和60 min可见光照射下,相比较于单体二氧化钛和UiO-66,AgI@TiO_(2)@UiO-66光催化活性明显增强,将其降解效率提升到90.58%。这种增强来自于AgI的进入,使可见光响应增加和UiO-66的后修饰性更为优异。

In this study,a kind MOF-based nanocomposite was synthesized by a simple hydrothermal method.AgI@TiO_(2)@UiO-66 nanocomposite is a highly active and efficient MOF-based photocatalyst,and its excellent adsorp-tion and photodegradation performance for organic dye norfloxacin under visible light was evaluated.The nanocompos-ites were characterized by X-ray diffraction(XRD),Fourier transform infrared spectroscopy(FTIR)and ultraviolet dif-fuse reflectance spectroscopy(UV-Vis DRS).Compared with monomer titanium dioxide and UiO-66,the photocatalytic activity of AgI@TiO_(2)@UiO-66 was obviously enhanced under 30 min dark reaction and 60 min visible light irradiation,and its degradation efficiency was increased to 90.58%.This enhancement comes from the increase of visible light re-sponse and the excellent post-modification of UiO-66.